build: update polars requirement from <0.20.3,>=0.20.1 to >=0.20.1,<0.20.7

[dependabot[bot]]

Updates the requirements on polars to permit the latest version.

Release notes

Sourced from polars's releases.

Python Polars 0.20.6

🏆 Highlights

• new implementation for String/Binary type. (#13748)

⚠️ Deprecations

• Deprecate dtype_if_empty parameter for Series constructor (#13976)

🚀 Performance improvements

• improve string/binary reverse performance (#14016)
• add "calamine" support to read_excel, using fastexcel (~8-10x speedup) (#14000)
• optimize DataFrame.describe by presorting columns (#13822)
• elide redundant bound checks. (#13909)
• speedup boolean filter (#13905)
• speedup binview filter (#13902)
• allow python threads in read_ functions (#13886)
• improve binview filter (#13878)
• apply string view GC more conservatively (#13850)
• add optimized BinaryViewArray comparison kernels (#13839)
• lazy cache binview bytes len (#13830)
• fast-path for eager int_range (#13811)
• Optimize arr.sum for inner non-null bool (#13800)

✨ Enhancements

• Add UnstableWarning for unstable functionality (#13948)
• DataFrame supports explode by array column (#13958)
• add "calamine" support to read_excel, using fastexcel (~8-10x speedup) (#14000)
• improve binary formatting (#13981)
• preserve Enum information when going to IPC (#13943)
• support calling describe on a LazyFrame (#13982)
• support kwargs in plugin 'field' functions and raise error on unsupported binview layout (#13944)
• support cast decimal to utf8 (#13829)
• add SQL support for timestamp precision modifier (#13936)
• support negative indexing and expressions for LEFT, RIGHT and SUBSTR SQL string funcs (#13888)
• Introduce explode for ArrayNameSpace (#13923)
• unify Series/DataFrame describe code (#13720)
• raise better error message for .dt.time on Date column (#13932)
• List set_operations supports float (#13920)
• Add ignore_nulls for arr.join (#13919)
• register 'set_sorted' as batch/elementwise (#13896)
• move Enum/Categorical categories to binview (#13882)
• Add ignore_nulls for list.join (#13701)
• Add ignore_nulls for pl.concat_str (#13877)
• Align int_range and int_ranges signatures (#13867)
• fix parquet for binview (#13873)
• support mmap for binview in OOC (#13872)
• implement ffi for binview (#13871)

... (truncated)

Commits

• 801da67 python polars 0.20.6 (#14023)
• 3a5fc8f feat(python): Add UnstableWarning for unstable functionality (#13948)
• 7f55fec fix(rust): quick fix for multiple chunks binary reverse (#14024)
• 29d41f1 fix: count matches on list categorical (#14021)
• e9bf5df fix: list.min/max with empty and/or None elements (#14018)
• 79a0984 fix(python): Make to_pandas() work for Dataframe and Series with dtype `Obj...
• f3c4cc5 rust polars 0.37.0 (#14019)
• 1bd3726 fix(python): raise for pl.concat(how="align") when no columns are shared be...
• 93b5755 feat: DataFrame supports explode by array column (#13958)
• b4d8594 perf: improve string/binary reverse performance (#14016)
• Additional commits viewable in compare view

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (5b90d55) 100.00% compared to head (e6cb16e) 100.00%. Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #667 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 54 54 Lines 2366 2382 +16 Branches 590 596 +6 ========================================= + Hits 2366 2382 +16 ```

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[dependabot[bot]]

A newer version of polars exists, but since this PR has been edited by someone other than Dependabot I haven't updated it. You'll get a PR for the updated version as normal once this PR is merged.

[dependabot[bot]]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.